28304445346 has 16 divisors (see below), whose sum is σ = 42561931680. Its totient is φ = 14117172480.

The previous prime is 28304445343. The next prime is 28304445391. The reversal of 28304445346 is 64354440382.

It is a super-2 number, since 2×28304445346² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28304445343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675281 + ... + 1692091.

It is an arithmetic number, because the mean of its divisors is an integer number (2660120730).

Almost surely, 2^28304445346 is an apocalyptic number.

28304445346 is a deficient number, since it is larger than the sum of its proper divisors (14257486334).

28304445346 is a wasteful number, since it uses less digits than its factorization.

28304445346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18849.

The product of its (nonzero) digits is 1105920, while the sum is 43.

The spelling of 28304445346 in words is "twenty-eight billion, three hundred four million, four hundred forty-five thousand, three hundred forty-six".